I think that using a $9 dimmer is a better idea than depending on a $20 thermostat. The temps in my snake room stay pretty consistant, so both my racks in there are on dimmers and I never really have to mess with them except for dropping the breeders at night. I would never trust a Reptistat after reading about the crazy fluctuations. I use a Helix for the rack in my living room and a Herpstat for my incubator, and I can't see myself ever buying a thermostat that wasn't a digital proportional. My .02 is to rig up a dimmer and start saving for a Herpstat.